Water-tube boiler.



D. S. JACOBUS.

4WATER TUBE BOILER.

APPLICATION FILED MAR.10,1914.

1,1 17,391, Patnted N0v.17,1914.

5 SHEETS-SHBET l.

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D. S. JACOBUS.

WATER TUBE BOILER.

APPLIUA'MON FILED 111111.10, 1014.

1, 1 l *R89 l Patented N0v.17, 1914.

5 SHEETSSHBET 2.

W/T/VESSES:

n.s.JAooUa WAlLl 'WDR BMM-2h.

MVLIUALLON llllim MAIL. l0, 1014A 1 l 1 *7, 39 1 Patented Nov. 17, 1914.

; HEETS SHEET 3.

1 WITNESSES:

W25 Amm/vir f.

D. S. JCO'BUS,

WATER TUBE BOI-LHR.

APPLIUMLON Mmm MAR. 10, 1914.

1,117,39L Panted Nov.17,1914.

6 SHERTSSHIIET 4.

Je? Arm/mfr f.

D. S. JAOOBUS.

WATER TUBE BOILHR,

APPLICATION {'1LMD1\[AK.10,\91-:

1,1 17,891 Patented NW1?, 1914.

5 SHEBTSMSHEE'L 5,

^ ciencies are obtained combined with a boiler v 'uNrrEnsaarEs PATENTorrrcE.'

.inavrns .T AcOEUs, OE JERSEY LcrrY, NEW JERsEYAss1GNOE 'ro THE EAEeOeKa wrLeox COMEANY, OE BAYONNE, NEW JERSEY, a CORPORATION or NEW JEEsEY.

wATEEfTUEE ,EOILEE Specification, of Letters Patent.

Application filed March 10, 1914. Serial No. 823,649.

T0 all f whom it` may concern Be 1t known that I, DAVID S'. JAcoBUs, acitizen of the United States, residing at Jersey Cityi n the county ofHudson and State of New Jersey, have'invented certain new and has forits object an increase in lthe etilciency and capacity in installationslof large units. This is effected through a furnace arrangement in whichexceptionally high eilifor leconomically removing 'the heat generated inburning the fuel In certain somewhat similar boilers which have beenconstructed, where there are three ilpper steam and water drums and twolower mud drums,

there is a limitation to the amount of heating surface which may -beinstalled espe` cially yin designs contemplating the use of straightboi-ler tubes. The-present invention overcomes this difficulty andallows for the introduction of any amount of surface that could bedesired to meet practical demands. The construction further admits ofthe in' troduction of dust pockets for collecting the dust at pointswhere it will not interfere with the passage of the gases through theboiler, which in itself, .is a material advantage.

An essential feature in the present con# struction is the employment ot"mud drums at the lower ends-of the inner banks of tubes in combinationwith headers into which the lower ends of tubes of the outer bank areexpanded, said headers beingconnected t O the p mud drums by means ofnipples. This arrangement allows either straight or curved tubes to beused and permits any desired amount of generating surface within therange of reasonable practice to be installed per foot of width of theboiler.

The invention will be understood by reference to the accompanyingdrawings in which- Figure 1 is a longitudinal section of a boilefshowing one embodiment of the inven tion; and Figs. 2, 3, 4 and 5similar views showing modifications in the form and ar rangement of thetubes and other parts.

Similar reference numerals indicate similar parts in the seve'ral views.

substantiall The design of Fig.V '1 shows two inner banks of water tubes1 and 2 inclined toward each other and expanded at' their upper endsinto a 'central steam and water drum 3,and attheir lower ends' into muddrums 4 and 5, said latter drums extending parallel with ting to theother side wall, one on each side of the furnace. Inclined tothe-vertical at y the same degreeas the inner banks yof tu es, are twoOuter banks 6 and.7,

the tubes 'of which are expanded at their upper ends into Outertransverse steam 'and water drums 8 and 9 placed one on each side of thecentral steam and water drum and parallel therewith, and their lowerends exl panded intoheaders 10 and 11. These headers lare connected,by'nipples' 12 and 13 to mud drums 4 and 5 respectively, spaces between'the nipples permitting the dust to fall through into pocketsaslater described. The central steam and water drum is interconnectedwith the outer steam `'and water drums by steam .circulators Hand 15,and by water would be secured by exposing all of thev tubes of the innerbanks tio the fire, in which case the baflles 18 and 19 are placedbetween two rows of the tubes so as to ex )ose only a ortion of thetubes of each ot the inner outer banks by battles 20' and 21, resting onthefront row of tubes of said banks, rand ex- 4tending downward from thesteam and Pate'nted N0v.17,1 914.

drum 3 and from one side wall of the setbanks tothe fire. The gasesthenflowdownward and are guided to the lower part of the thehtubes'of theouter banks 6 and 7, and Vthrough the headers l0 and ll and connectingnipples l2 and 13 into mud drums t and 5, from whence it again flowsupward through the tubes ot' the inner banks. The steam generated by theboiler passes from the drums 8 and 9 through the pipes 25 and 26 to twosuper-heaters 27 and 28, placed in the spaces between the two banks ofgenerating tubes, the steam being thus divided between the twosuper-heaters and finally discharged therefrom into the mains, Thesuper-heaters 2i' andb may be any ap*I proved design, that shownconsisting oit U-shaped tubes' extending substantially parallel with thetubes ol' the inner banks with their ends expanded into cross boxes. Thesuperheaters may be omitted if saturated steam only is required. Dustpockets 20 and 30 are provided below the mud drums fl and `5 into whichdust` or soot will collect after passing through the spaces between thenipples 12 and 13, and from which it may be readily withdrawnthi'oughdoors 3l. and 32, or it may be removed by means ot' a clonveyer.

ln the design shown in Fig. 2 the tubes of the outer banks andl 35 arecurved at their upper ends so as to enter the drums S and 9 radially,the tubes of the inner banks are ot slightly less length, than those ofF ig. l; and the tubes the lirst row ot' the outer banks are, for thegreaterpart of their length, set out a short distance from the othertubes of the bank. Also a larger number of tubes are shown in the outerbanks than are shown in Fig. l, and smallerl tubes are shown in theouter banks than in the inner banks. Otherwise the construction. issubstantially the saine as shown inlig. l.

ln the design shown in lig. 3 the tubes of the outer banks are curved attheir upper ends as in Fig. 2, and 'the tubesof the in-k ner banks arecurved at both ends so as to entier the central steamand water drum 3and the mud drums el and 5 radially. I also introduce an additional rowoit tubes 3G set out from the main body ottubes ot the outer banks, andupon said rows the baffles 37 are supported. Vits shown in F ig. 3 thesections i ofsaid bafli'es may be built alternately on opposite sides ofthe tubesBG. .ln this design l have shown a Roney Stoker on the righthand side of the Jfurnace instead of a. Taylor stoker, as on the lefthand side and as in all the other designs.

ln place o'li the central steam and water drum 3 of Figs. l, 2 and 3 Ihave provided,

in the design shown in Fig. el. two steam' and water drums 3S and S9,the tubes of the bank l being expanded into drum 3S, and the tubes otbank Q into drum 39, the A- shaped combustion chamber being closed by afire brick covering VOever said drums. have also modified the designs ofthe pre- A the headers.

iaiwgsei viously described boilers by introducing rows of tubes Ll1. andA9 the Jformer expanded into drum 38 and their lower ends` 'in thisdesien are located in the spaces be- 'tween the banks l and E2 and therows of tubes l-l and 42.

ln the design shown in Fig. 5 the tubes of vthe inner banks, which areexpanded into the middle steam and water drinn, are divided so as toconnect'one part with the mudv drums a and 5 and one part with theheaders l0 and ll.- lhe supe"heaters 27 and 2S are introduced into thespaces between the divided parts of the inner banks of tubes.

The tubes in the outer banks of allot the above described dcsigns'niaybe readily removed, as indicated by the broken lines, by passing themdownward through hand hole openings in the headers and new tubes may beinserted by passing them upward through An advantage derived in theconstruction of the tube sheet, where straight tubes are inserted in theouter banks, as in Fig. l,v is, that it is not necessary to allow forthe removal oit the. tubes by leaving enough space between the tubes forpassing them in and out.

In the ordinary use of straight tubes connected at both ends to drums,it is necessary inserting the new tube one end of fit is iassed throughthe opening in one ot' the drums and it is then moved over the openingin the other drum and made to enter the latter after which it isexpanded into place. To accomplish this requiresfa much wider spacing ofthe tubes than is required in boilers of the present design where thetubes are replaced in the outer banks by passing them upward through thehand hole openings in the headers. The hand hole fittings provided forthe removal and replacement of tubes in the headers -10 and ll. need beremoved only for replacing tubes, as it is not ,necessary to remove suchfittings in cleaning the tubes by means of standard turbine tubecleaners, which are inserted `from the top of the tubes by a man with-inthe upper steam and water drums.

fing straight tubes they can be Areadily inspected to make certain thatall of the scale is removed after a cleanser has been used. Again, withstraight tubes in 4,the inner banks there is no danger of sediment lodg4ing near the lower Vends as there is in the case of curved tubes. Wheresediment lodges in a tube exposed to the radiant heat vertical plane ofthe setting. There is thusprovided a large Ashaped combustion of thefire there is danger 'of blistering, and

the use of the straight tubes, therefore, leads Tubes 'of .differentdiameters may be` used in the difto an advantage in this respect.

ferent banks. In Fig. 2 smaller tubes are banks. i

The banks of tubes in all of thevd-esigns above described are suspendedover a common furnace 33 extending fromv thefront to the rear of theboiler, the inner banks being so disposed as to converge toward eachother upwardly, their upper ends meeting approximately in the transversecentral chamber substantially closed at the. apex and open to the gasesat the upper part of the inclined sides, that is, at the uptake ends ofthe generating tubes of the inner banks. The gases divide and pass overthe heating surfaces, as indicated by the arrows, and as previouslydescribed.

tially uniform.

l passing through the boiler and escaping to the stacks will be avoided.It is well known among engineers that in ordinary boiler furnaces thereis a great variation in 4anzilyses takenfroin different points in thepath of the iow of gases leaving the furnace, whereas with the presentfurnace arrangement this action is reduced to a minimum, as anyirregularity from the front to the rear of the grates disappears beforethe gases pass from the upper part of the combustion chamber, and as thecomposition of `the gases for` uniform firing conditions will besubstantially uniform from one side of the boiler to the other itfollows that the composition of the entire volume of the gases leavingthe furnace will be substan- The angle of inclination ofthe tubes of theheatin surface is approximately 20 `tothe vertical, but I dolnotrestrictmyself to such degree of inclination, the essential featurebeing the disposition of the banks of tubes `over a common furnace andcom bustion chamber to provide an A-shaped combustion chamber ofrelativelylarge volume, and' the other features herein described, whichcontribute to an increased efficiency and economy in operation.

The steam and water drum into which the inner tubes are expanded hasbeen referred to as being central. For` certain space conditions andstoker constructions it might be, advantageous to so locate this drumthat it would not come exactly central with the furnace or boilersetting.

What I claim and desire to secure by Let ters Patent of the UnitedStates is 1. In a water tube boiler, two inner banks of generating tubesinclined toward' each other so as to form two sides of an A-shapedcombustion chamber, a steam and Water drum into which the -upper ends ofthe tubes of both of said banks are expanded, two mud drums into whichthe lower ends of the tubes e water drums,` and connections between thel mud drums'and said headers.

2., In a water tube boiler, two inner banks ofl generating tubesinclined toward each other so as to form two sides of an A-shapedcombustion chamber, a steam and water drum into whichthe upper ends ofthe tubes of both of said banks are expanded, two mud drums into whichthe lower ends of the tubes of the respective lbanks are expanded, twoouter banks of tubes one on each side ofthe inner banks, steam and waterdrums and headers intowhich the tubes of the outer banks are expanded,steam and water circulators connecting the intermediate steam and waterdrum with the outer steam and water diums, connections between the muddrums and said headers, and baflies toy direct the hot gases to theupper portions of the inner `banks of tubes, thence downward to thelower part of the outer banks, and thence upward over the tubes of theouter banks. p

3. In1 a water tube boiler, two inner ban-ks of generating tubesinclined toward each other so as to form two sides of an A-shapedcombustion chamber a steam and water drum into which the upper ends ofthetubes of both of said banks are expanded, two mud drums into whichthe lower ends of the tubes of the respective banks are expanded, twoouter banks of tubes one on each side of the 4inner banks, steam andwater drums and headers into which the tubes of the outer banksare;expandcdsteam and water circulators connecting the intermediatesteam and water drum with the outer steam and water "drums,A connectionbetween the mud drums and said headers, baies to convey the hot gasestothe upper portions ofithemiddle banks of tubes, thence downward to thelower part of the outer banks and thence upward over and across thetubes of the outer banks, and walls forming dust pockets below theconnections between the mud drums and .lower headers for collecting anydust which falls between said connections.

a.' In a water tube boiler, two inner banks of generating tubes inclinedtoward each other so as te form two sides of' an it-shaped combustionhamber, a steam and water drum into which the upperA ends of the tubesof both of said banks are expanded, two

mud drums into which the lower ends of the tubes ofthe respective banksare expanded, two outer banks of `tubes one on Ieach. side of the innerbanks, steam and water drums and headers 'into'iwhich the tubes of theouter banks areexpanded, steam and water circu- -lators connecting theintermediate steam and "water drum with the outer steam and water Idrums, connections between the `mud drums and said headers, superheatersin the spaces between the banks of tubes, and pipes con.

necting the outer steam and water drums with said superheaters.

5." ln a water tube boiler, two inner banks of generating tubes inclinedtoward each other so as to form two sides of an .ft-shaped combustionchamber, asteamand water drum and two mud drumsl into which the tubes ofsaid banks are expanded, two outer.

banks of tubes one on each side of the inner banks, steaxnand waterdrums and headers into which the tubes of the outer banks are expanded,steam and water circulators coni nccting the intermediate steam andwater drum with the outersteain and water drums, connections between themud drums and said headers, said headers being located beyond the muddrums and having hand hole fittings through which the tubes of the outerbanks may be removed and replaced.

6. In a water tube boiler, two inner banks oit generating tubes inclinedtoward each other to form two sides o't' an Ashaped g combustionchamber, steam and water and mud drums into which the tubes of saidbanks are expanded, two outer ,banks of tubes one on each side ot' theinner banks, steam and water drums and'headers into which the tubes otthe outer banks are expanded, connections between the mud drums and saidheaders, and a row of tubes expanded at their upper ends into theintermediate steam and water drum and at their lower ends into saidheaders.

7. ln a water tube boiler, two inner banks or generating tubes inclinedtoward each other so as to form two sides or an [Li-shaped arrasarcombustion chamber, a steam and water drum and'two mud drumsinto whichthe tubes of said bank are expanded, -two outer headers, bafiesextending upwardly trom` the mud drums to direct the hot`gases to theupper parts of lthe inner banks of tubes, battles extending downwardlyfrom the outer steam and water drums to direct the gases to the lowerpart of the outer banks of tubes, and a fuel chamber common to saidbanks oftubes.

8.- In a water tube boiler, two inner banks of generating tubes inclinedtoward each other so as to form two sides Otan A-shaped combustionLchamber, a steam and water drum into which the upper ends of the tubesof said banks are expanded, two outer banks of tubes one on each side ofthe inner` banks, steam and water drums into which the upper ends of thetubes of lsaid outer banks are expanded, a furnace common to said banksof tubes, two mud drums one on each side of said Jfurnace, headersconnected to said drums, the lower ends of the outer banks of tubesbeing expanded into said headers, and the lower ends of a portion of thetubes of the inner banks expanded into the mud drums, and a portionexpanded into said headers.

9. In a water tube boiler, two inner banks of generating tubes inclinedtoward leach other so as to torni two sides of an A-shaped combustionchamber, a steam and water drum into which the upper ends of the -tubesof both ot' said banks are expanded, two

mud drums into which the lower ends of the tubes of the respective'bandsare expanded, two outer banks of tubes one on each side ot the innerbanks, steam and water drums and headers into which the tubes oftheouter banks are expanded, connections between the mud drums and saidheaders, and a fuel chamber common to said'banks of tubes. .i

l0. ln a water tubeboiler, twp inner banks of generating tubes inclinedtoward each other so as to form two sides of an ifi-shapedcombustionchamber, a steam and water drum into which the upper ends ofthe tubes ot both o' said banks are expanded, two mud drums into whichthe lower ends "of the tubes ol the respective vbanks are expanded, twoouter banks oi tubes one on each side of the inner banks, steam andwater drums and headers into which the tubes of the outer banks areexpanded, connections between the mud drums and said headers, baffles todirect the hot ist 'isa

gases to the upper portions of the inner signed my 11eme in the presenceof two sub-- bunks of tubes, thence donnward tc;l the seribingwitnesses. lower part of the outer ban Ys, an t ence upward over thetubes of the outer bunks, DAVID S' JALOBUS' and a fuel chamber common tosaid banks of tubes.

In testimony whereof I have hereunto Witnesses E. P. TERRY, EDITH CAMP.

